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20 December, 15:25

The mean is μ = 15.2 and the standard deviation is σ = 0.9. find the probability that x is greater than 17.

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  1. 20 December, 15:31
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    The probability that x >17 will be found as follows:

    the z-score is given by:

    z = (17-15.2) / 0.9=2

    Thus

    P (X>17) = 1-P (x<17) = P - (z=2)

    =1-0.9772

    =0.0228
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